Message-ID: <4910AFE5.4020408@zytor.com>
Date: Tue, 04 Nov 2008 12:26:13 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Andi Kleen <andi@firstfloor.org>
CC: Alexander van Heukelum <heukelum@fastmail.fm>,
       Cyrill Gorcunov <gorcunov@gmail.com>,
       Alexander van Heukelum <heukelum@mailshack.com>,
       LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
       Thomas Gleixner <tglx@linutronix.de>, lguest@ozlabs.org,
       jeremy@xensource.com, Steven Rostedt <srostedt@redhat.com>,
       Mike Travis <travis@sgi.com>
Subject: Re: [PATCH RFC/RFB] x86_64, i386: interrupt dispatch changes
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Andi Kleen wrote:
> 
> Or again just generate them on demand when the interrupt is set up.
> If you really have 240 interrupts sources you can afford the 5k likely,
> but for most there will be only a minimum number of stubs.
> 
> Although frankly I suspect there are far easier ways to save 5k of memory.
> 

Generating them dynamically is probably pretty ugly too, though.

Shrinking the whole table down to 2K by just regularizing the structure
is trivial, though, and should almost certainly be a win.  The more
esoteric ideas are probably worse.

	-hpa
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